CVE-2021-22873

MEDIUM
Published Jan 26, 20215y ago · Modified Jun 17, 20262w ago
6.1 CVSS 3.1
Medium
Find Similar
Published Jan 26, 2021 5y ago
Last Modified Jun 17, 2026 2w ago

Description

Revive Adserver before 5.1.0 is vulnerable to open redirects via the `dest`, `oadest`, and/or `ct0` parameters of the lg.php and ck.php delivery scripts. Such open redirects had previously been available by design to allow third party ad servers to track such metrics when delivering ads. However, third party click tracking via redirects is not a viable option anymore, leading to such open redirect functionality being removed and reclassified as a vulnerability.

CVSS Details

Base Score
6.1
Exploitability
2.8
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-601

Affected Products 1

VendorProductVersionRange
revive-adserverrevive_adserver* <5.1.0

References 5

  • packetstormsecurity.com http://packetstormsecurity.com/files/161070/Revive-Adserver-5.0.5-Cross-Site-Scripting-Open-Redirect.html
    Third Party AdvisoryVDB Entry
  • seclists.org http://seclists.org/fulldisclosure/2021/Jan/60
    Broken LinkMailing ListThird Party Advisory
  • github.com https://github.com/revive-adserver/revive-adserver/issues/1068
    Issue TrackingThird Party Advisory
  • hackerone.com https://hackerone.com/reports/1081406
    ExploitThird Party Advisory
  • revive-adserver.com https://www.revive-adserver.com/security/revive-sa-2021-001/
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.